Clock scaling allows you to change the clock speed of the running CPU on the fly.
This is a nice method to save battery power, because the lower the clock speed, the less
power the CPU consumes. CPU Freq is a generic framework to make architecture implementation
specifics transparent to a user. Currently, CPU Freq supports various ARM CPUs (Integrator,
SA1100, SA1110), various x86's (AMD Power NOW, VIA Cyrix Longhaul), and various Super H CPUs
(SH-4 7750/7751, SH-3, and so forth). This project also incorporates some work at reverse
engineering support for Intel Speedstep technology.